The Experts below are selected from a list of 168 Experts worldwide ranked by ideXlab platform

F Chen - One of the best experts on this subject based on the ideXlab platform.

  • biological control of grape Crown Gall by rahnella aquatilis hx2
    Plant Disease, 2007
    Co-Authors: F Chen, Jinyun Li, Jianxin Wang, H.m. Wang
    Abstract:

    ABSTRACT Crown Gall induced by Agrobacterium vitis is a worldwide plant disease in grape-growing regions. Rahnella aquatilis HX2, a new isolate from vineyard soil in Beijing, showed a significant inhibition effect on the development of Crown Galls in grapevines. In field trials, immersion of the basal ends of grape cuttings with HX2 cell suspension inhibited or completely prevented Crown Gall formation caused by A. vitis K308 in the roots of the plants from the cuttings. The 3-year average disease incidence in grape plants treated with HX2 was 30.8% compared to 93.5% in plants without HX2. The culture supernatant of HX2 exhibited a stronger inhibition effect on disease development than did the cell suspension. HX2 could be found in the grape rhizosphere, grown under field conditions, for up to 90 days after inoculation. There was no significant difference in the mean population sizes of root microflora between plants treated and not treated with HX2. The inhibition effect of HX2 on Crown Gall in sunflower...

  • Biological Control of Grape Crown Gall by Rahnella aquatilis HX2.
    Plant disease, 2007
    Co-Authors: F Chen, Guo Yanbin, Jing-ru Wang, Haihua Wang
    Abstract:

    Crown Gall induced by Agrobacterium vitis is a worldwide plant disease in grape-growing regions. Rahnella aquatilis HX2, a new isolate from vineyard soil in Beijing, showed a significant inhibition effect on the development of Crown Galls in grapevines. In field trials, immersion of the basal ends of grape cuttings with HX2 cell suspension inhibited or completely prevented Crown Gall formation caused by A. vitis K308 in the roots of the plants from the cuttings. The 3-year average disease incidence in grape plants treated with HX2 was 30.8% compared to 93.5% in plants without HX2. The culture supernatant of HX2 exhibited a stronger inhibition effect on disease development than did the cell suspension. HX2 could be found in the grape rhizosphere, grown under field conditions, for up to 90 days after inoculation. There was no significant difference in the mean population sizes of root microflora between plants treated and not treated with HX2. The inhibition effect of HX2 on Crown Gall in sunflower, caused by different agrobacterial strains, varied between 30.7 and 100%, depending on strains. Our results showed that Rahnella aquatilis HX2 may be used as a biological control agent for Crown Gall disease of grapes.

Haihua Wang - One of the best experts on this subject based on the ideXlab platform.

  • Biological Control of Grape Crown Gall by Rahnella aquatilis HX2.
    Plant disease, 2007
    Co-Authors: F Chen, Guo Yanbin, Jing-ru Wang, Haihua Wang
    Abstract:

    Crown Gall induced by Agrobacterium vitis is a worldwide plant disease in grape-growing regions. Rahnella aquatilis HX2, a new isolate from vineyard soil in Beijing, showed a significant inhibition effect on the development of Crown Galls in grapevines. In field trials, immersion of the basal ends of grape cuttings with HX2 cell suspension inhibited or completely prevented Crown Gall formation caused by A. vitis K308 in the roots of the plants from the cuttings. The 3-year average disease incidence in grape plants treated with HX2 was 30.8% compared to 93.5% in plants without HX2. The culture supernatant of HX2 exhibited a stronger inhibition effect on disease development than did the cell suspension. HX2 could be found in the grape rhizosphere, grown under field conditions, for up to 90 days after inoculation. There was no significant difference in the mean population sizes of root microflora between plants treated and not treated with HX2. The inhibition effect of HX2 on Crown Gall in sunflower, caused by different agrobacterial strains, varied between 30.7 and 100%, depending on strains. Our results showed that Rahnella aquatilis HX2 may be used as a biological control agent for Crown Gall disease of grapes.

H.m. Wang - One of the best experts on this subject based on the ideXlab platform.

  • biological control of grape Crown Gall by rahnella aquatilis hx2
    Plant Disease, 2007
    Co-Authors: F Chen, Jinyun Li, Jianxin Wang, H.m. Wang
    Abstract:

    ABSTRACT Crown Gall induced by Agrobacterium vitis is a worldwide plant disease in grape-growing regions. Rahnella aquatilis HX2, a new isolate from vineyard soil in Beijing, showed a significant inhibition effect on the development of Crown Galls in grapevines. In field trials, immersion of the basal ends of grape cuttings with HX2 cell suspension inhibited or completely prevented Crown Gall formation caused by A. vitis K308 in the roots of the plants from the cuttings. The 3-year average disease incidence in grape plants treated with HX2 was 30.8% compared to 93.5% in plants without HX2. The culture supernatant of HX2 exhibited a stronger inhibition effect on disease development than did the cell suspension. HX2 could be found in the grape rhizosphere, grown under field conditions, for up to 90 days after inoculation. There was no significant difference in the mean population sizes of root microflora between plants treated and not treated with HX2. The inhibition effect of HX2 on Crown Gall in sunflower...

Sipra Guha-mukherjee - One of the best experts on this subject based on the ideXlab platform.

  • Polyamine levels in Crown Gall tumour and teratoma
    Phytochemistry, 1992
    Co-Authors: Vibha Srivastava, Sipra Guha-mukherjee
    Abstract:

    Abstract The levels of polyamines in two morphological types of transformed tissue [Crown Gall tumour (undifferentiated) and teratoma (shooty tumour)] and of untransformed differentiating callus tissue growing in hormone-containing media were compared. In Crown Gall tumour, putrescine (Put) > spermidine (Spd) > spermine (Spm), whereas this pattern was reversed in the case of teratoma. In differentiating callus, Spd > Spm > Put. The difference in polyamine levels in Crown Gall tumour and teratoma suggests that rapidly growing transformed tissue need not necessarily contain high Put levels and relative levels of various polyamines is associated with the characteristics of a tumour type

Vibha Srivastava - One of the best experts on this subject based on the ideXlab platform.

  • Polyamine levels in Crown Gall tumour and teratoma
    Phytochemistry, 1992
    Co-Authors: Vibha Srivastava, Sipra Guha-mukherjee
    Abstract:

    Abstract The levels of polyamines in two morphological types of transformed tissue [Crown Gall tumour (undifferentiated) and teratoma (shooty tumour)] and of untransformed differentiating callus tissue growing in hormone-containing media were compared. In Crown Gall tumour, putrescine (Put) > spermidine (Spd) > spermine (Spm), whereas this pattern was reversed in the case of teratoma. In differentiating callus, Spd > Spm > Put. The difference in polyamine levels in Crown Gall tumour and teratoma suggests that rapidly growing transformed tissue need not necessarily contain high Put levels and relative levels of various polyamines is associated with the characteristics of a tumour type